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SUMMARY:The mathematical description of the influence of the expansion of
the Universe on the metric of a black hole
DTSTART;VALUE=DATE-TIME:20190510T182000Z
DTEND;VALUE=DATE-TIME:20190510T184000Z
DTSTAMP;VALUE=DATE-TIME:20200525T190723Z
UID:indico-contribution-3403662@indico.cern.ch
DESCRIPTION:Speakers: Adrian Linares-RodrÃguez (Universidad Central "Mart
a Abreu" de Las Villas\, Santa Clara ci)\nThe existence of black holes has
its analytical argumentation in Einstein's field equations. The first sol
ution of general relativity that would characterize a black hole was found
by Schwarzschild in 1916. Since then\, these cosmic objects are being stu
died and investigated in their various variants: Scwartzshild\, Kerr\, Rei
ssner-NordstrÃ¶m\, Kerr-Newman\, and others. The no-hair theorem states th
at a black hole has only three independent properties: mass\, charge and a
ngular momentum and is characterized by producing intense gravitational fi
elds. On the other hand\, the existence in the Universe of a dark material
component of the repulsive type against the attractive action of gravitat
ion can be represented by the quintessence. The effect of the quintessence
surrounding the black hole is then introduced. Ordinarily\, an additional
element within the stress-energy-moment tensor of the Einstein field equa
tions is introduced. The mathematical description of this problem is compl
icated\, in general. In this investigation\, we have chosen to use a varia
nt in which the effect of the quintessence is introduced as a perturbative
action in the metric of the ordinary black hole introducing the time-depe
ndent scale factor. The Einstein field equations are obtained using the pe
rturbed metric and the results obtained correspond to those obtained by th
e ordinary way.\n\nhttps://indico.cern.ch/event/721602/contributions/34036
62/
LOCATION:Naviti Beach Club Varadero Hotel
URL:https://indico.cern.ch/event/721602/contributions/3403662/
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